Uplink transmission resource allocation method, base station, and user equipment

Abstract

The present invention provides a method executed by a base station, comprising: generating a first indication and a second indication for uplink transmission resource allocation for a tone group, wherein the tone group is used as a resource allocation unit and comprises one or more tones; and sending to a UE an RRC message including the first indication, and sending to the UE downlink control information carried by an NB-PDCCH, wherein the downlink control information includes the second indication. Accordingly, the present invention further provides a method executed by a user equipment, the method comprising: receiving, from a base station, an RRC message, wherein the RRC message comprises a first indication for uplink transmission resource allocation for a tone group; receiving, from the base station, downlink control information carried by an NB-PDCCH, wherein the downlink control information comprises a second indication for uplink transmission resource allocation for the tone group; and allocating resources for uplink transmission according to the first indication and the second indication. The present invention further provides a base station and a UE respectively executing the above-described methods.

The invention claimed is: 
     
       1. A user equipment (UE), comprising:
 a receiving circuitry 
 to receive indication information carried by narrowband physical downlink control channel (NPDCCH), which indicates the subcarriers of narrowband physical uplink shared channel (NPUSCH) assigned for UE, 
 wherein when subcarrier spacing of NPUSCH is 3.75 kHz, the receiving circuitry uses the indication information to indicate one subcarrier from possible assigned subcarriers and 
 when subcarrier spacing of NPUSCH is 15 kHz, the receiving circuitry uses the indication information to indicate a set of one or more allocated subcarrier(s) according to a predefined mapping table, wherein the table includes entries for single subcarrier's allocation and entries for multiple subcarriers' allocation, 
 wherein the number of allocated subcarriers is 1, 3, 6 or 12. 
 
     
     
       2. A base station, comprising:
 a generation circuitry 
 to generate indication information carried by narrowband physical downlink control channel (NPDCCH), which indicates the subcarriers of narrowband physical uplink shared channel (NPUSCH) assigned for UE, 
 wherein when subcarrier spacing of NPUSCH is 3.75 kHz, the generation circuitry uses the indication information to indicate one subcarrier from possible assigned subcarriers and 
 when subcarrier spacing of NPUSCH is 15 kHz, the generation circuitry uses the indication information to indicate a set of one or more allocated subcarrier(s) according to a predefined mapping table, wherein the table includes entries for single subcarrier's allocation and entries for multiple subcarriers' allocation, 
 wherein the number of subcarriers is 1, 3, 6 or 12; and 
 a transmission circuitry to transmit the indication information carried by NPDCCH.